Productivity improvement of tomato plants under saline environmental conditions

الملخص EN

-Tomato plants of Castel Rock cultivar were grown under saline calcareous soil conditions at Ras Sudr region during 1995- 1996 and 1996-1997 growing seasons.

The treatments were as follows: 1- Four soil amendment treatments i.e.

town refuse at 20 ton /fed., agricultural sculpture at 500 Kg.

/fed.

And a combination between them, and a control treatment.

2- Foliar spray with zinc at concentrations of 0, 0.2 or 0.4% as ZnSO4 and K as K2O at concentrations of 0, 0.2 or 0.4%.

A spilt plot design was used.

Soil amendments, zinc, and potassium treatments were distributed randomly in the main, sub and sub sub plots respectively.

Obtained results revealed that tomato fruits productivity increased significantly with town refuse treatment or 0.4% ZnSO4 or 0.4% K2O concentration, as well as, with town refuse treatment + 0.4% ZnSO4.

The highest values of T.

S.

S.

and vitamin C in tomato fruits were obtained with town refuse treatment or 0.4% ZnSO4or 0.4% K2O treatments, as well as, with town refuse treatment + 0.4% ZnSO4 treatments.

While Ca content was increased with town refuse treatment 500 Kg.

/ fed.

Sculpture addition and 0.4% K2O, as well as, with 500 Kg.

/fed.

S + 0.4% K2O treatments.